Knockdown apparatus for forming artificial-stone blocks.



W. LAKE. KNOGKDOWN, APPARATUS FOR FORMING ARTIFICIAL STONE BLOOKS.

' APPLICATION FILED 11.22, 1909.

970,727. Patented Sept. 20, 1910.

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' W. LAKE. KNOOKDOWN APPARATUS FOR FORMING ARTIFICIAL STONE BLOCKS.

APPLICATION IILED APILZZ, 1909. 970,727. Patented Sept. 20, 1910.

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WILMOT LAKE, OF WASHINGTON, DISTRICT OF COLUMBIA.

KNOCKDOWN APPARATUS FOR FORMING ARTIFICIAL-STONE BLOCKS.

Specification of Letters Patent.

Patented Sept. 20, 1910.

Application filed April 22, 1909. Serial No. 491,557.

To all whom it may concern:

Be it known that I, l/VILMOT LAKE, a citizen of the United States,residing at Washington, in the District of Columbia, have inventedcertain new and useful Improvements in Knockdown Apparatus for FormingArtificial-Stone Blocks, of which the following is a specification.

This invention relates to the manufacture of artificial stone, andpertains especially to an apparatus for forming concrete or otherartificial stone material into building blocks.

The object of the invention is to provide novel and peculiar apparatusadapted to be assembled progressively with the deposit therein of thematerial of which the stone is composed, and knocked down forseparation.

A further object of the invention is to provide novel and peculiarapparatus constructed and arranged to be assembled progressivelyaccording to the number of artificial stone blocks desired to be formedby said apparatus, and adapted to be knocked down for delivering theblocks. A still further object of the invention is to provide novel andpeculiar apparatus constructed and arranged to be assembled step by stepin continuous progression simultaneously with the deposit of the stonematerial for forming any number of artificial stone building blocks, andadapted to be knocked down for separation.

It is well known that in the manufacture of concrete blocks orartificial stone blocks, various molds, presses, formers and the likeare employed to compress or mold concrete or similar substance intobuilding blocks.

- I Artificial stone blocks have also been formed by filling the stonematerial into a fixed frame surrounding a series of partitions;-

and it is common to employ devices and apparatus similar in appearanceto mine for laying concrete pavements, curbs, and gutters; but myinvention or apparatus, its construction, the manner of operating it,and its results differ essentially from the devices .or apparatushereinbefore referred to, especially in that my apparatus is constructedand arranged to be assembled in progression consistent andsimultaneously with the filling in of the material to form the blocks.

The purpose of my invention is to provide an apparatus whereby acontinuous progression of separate and independent artificial stoneblocks are formed in compartments of the apparatus, a plurality of suchcompartments being built out from one end and one side of the apparatusin continuous progression.

In the accompanying drawings forming part of this application: Figure 1is a perspective view showing the application of the invention one endand one side thereof showing means for continuing the apparatus inlength and width. Fig. 2 is a similar view partly broken away. Fig. 3 isa detail perspective view of one of the crossplates. Fig. 4 is aperspective view of one of the stop-blocks. Fig. 5 is a detail sectionalView taken through one of the pin and eye points. Fig. 6 is aperspective view of a modification partly broken away.

The same reference numerals denote the same parts throughout the severalviews of the drawings.

In carrying out my invention it will be observed that I do not employ asupplemental frame in which or by which my formers are held orsupported, but that the apparatus is composed entirely of the formers,nor do I, in my preferred apparatus employ braces, clamps or ties forholding the forms together.

The apparatus consists of a series of boards or plates 1, having aseries of pinholes 2, arranged in pairs at predetermined pointsthroughout the length of the boards or plates, and a series ofcross-plates or boards 3, having at each end projecting pins 4 to engagethe holes 2 in assembling the parts, but not extendin through the holes.One of said boards 1, forms the outer side or starting side board, andone of said plates 3, forms the outer end or starting end plate of theapparatus. The boards 1 and 1 are of sufficient thickness to ermit thepins of the plate 3 to be inserted therein from each side of said boardsso that each of said holes accommodates two ins. A series of base boards5 are provided one for each compartment, and these boards have cores 6thereon for making the block 7, hollow or partly so. The whole apparatusis set upon a suitable floor 8.

In order to support or hold the boards in upright position, as they areset up one after the other in continuous rotation, I provide stop-blocks9 having a handle 9. These blocks are of special construction so thatthey may be used for holding the boards perpendicular, or for holdingone or more of said boards in inclined position, and to accomplish bothfunctions the block 9 (only one of them will be described in detail) hasfaces 10 and 11 at right-angles to each other. The face 10 forms thebase or seat of the block, and has pointed prongs or spurs 12, adaptedto enter the floor 8 in seating the blocks, and the face 11. forms atemporary bearing for the boards. A slot 13 extends into the body of theblock from the face 11, and a. recess 14: is formed in the face 11, andextends from the slot 18 tothe base-face 10. A plate 15 is pivoted at 16in the lower end of the recess; and has a curved arm 17 working in theslot 13. Said arm is provided with holes 18 engaged by a pin 19 forholding the plate 15in such position as desired. In using the blocks forperpendicular boards, the plate sets into the recess flush with the face11, but when it is desired to tilt or use the boards in slanting orinclined position for the purpose of beveling one side of the stone, theplate is swung outwardly on its pivot and held to the angle desired inthe stone by the pins 19 and the arm 14. In this manner any desiredangle or bevel may be obtained in one side of the stone. It is obviousthat the ends of the cross-plates may be beveled to conform with theposition of the boards in forming the bevel sides.

In operating the apparatus the starting side and end. are set up, andthe stop-blocks fixed temporarily against them, and as many core-platesand cross-plates as may be desired are set against the starting boardwith the pins on one end of the cross-plates engaging the holes of saidboard, another lengthwise board is set against the positionedcross-plates so that the pins on the other end of said cross-platesengage the holes of this last mentioned board, and other of saidstop-blocks are temporarily fixed against this board, thus forming oneline of compartments. Continuous application of said parts andprogressive setting up of the same as above described will form anynumber of compartments desired, and hence produce an equal number ofartificial stones in succession. It will be understood that thestop-blocks, except those against the outer boards, are removed orchanged from one board to the next as the compartments are formed, andprior to the filling of the compartments, so that only one set ofstopblocks are employed.

According to this invention, the apparatus is not confined or limited toa surrounding or other frame, as there is no frame employed, andtherefore the boards comprising the apparatus may be multiplied andlengthened in operating the apparatus and thereby make it continuous andunlimited inlength and width.

Referring to the modification shown'in Fig. 6, the cross-plates 20 areWithout pins and are held in position by the longitudinal boards 2].,and the core plates 22 between which the bottom of the plates 20 areheld, said boards 21 having no pin holes, and are tied and clamped withthe cross-plates and core-plates by a tie rod 23, having notches2t-fitting the top edge of the cross-plates. It will be observed thatthere is no compression of the parts of the apparatus, they being heldone by the other in the same position as placed before theconcrete isfilled in, hence there is no pressingrof the concrete,

and it is simply allowed to stand, as it is poured into the compartmentuntil set and dry, whereupon the apparatus is knocked down by separatingthe boards and plates, and removing them, which operation separates theblocks. It will be seen that any number of compartments or forms may beused according to the number of boards and plates; that one or more rowsof stone may be formed as desired; that certain of the rows may havebeveled sides as desired; that a portion or certain of the rows of theapparatus may be knocked down without disturbing the remaining rows; andthat the boards, blocks, and plates may be used over and over again, ina most expeditious and inexpensive manner.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a frameless apparatus adapted to be knocked down and set up incontinuous operation for forming artificial stone, the combination, withindependent longitudinal boards, and independent cross-plates betweentheboards, of transferable stop-blocks for temporarily holding certainof the boards, a plate pivoted at one end in one face of the block, fromthe plate and working in the block, and a suitable pin extending throughthe block and through the arm for holding the plate in position.

2. In a stop device for scribed, the combination, able Weight havinganchoring prongs, of a swinging plate pivoted at one end to the weight,a curved arm projecting from the other end of the plate and working inthe weight, and a pin engaging the arm for holding the plate at variousangles to the weight. I y

In witness whereof I hereunto set my hand in the presence of twowitnesses.

WILMOT LAKE.

the purpose dea curved arm projecting with a transport-

